Alarm for automobiles, &amp;c.



A. SON.

ALARM FOR AUTOMOBILES, dro. APPLICATION FILED 113.17, 1911.

1,037,351 Patented Sept. 3, 1912.

COLUMNA PLANOGRAFM VlAmlNamN. D. c.

UNITED STATES PATENT OFFICE.

ANTHONY SON, OF BOSTON, MASSACHUSETTS, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO PAYNE MANUFACTURING COMPANY, OF BOSTON, MASSACHU- SETTS, A CORPORATION OF MASSACHUSETTS.

ALARM FOR AUTOMOBILES, &o.

To all whom t may concern.' l

Be it known that I, ANTHONY SON, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Alarms for Automobiles, &c., of which the following is a specification.

This invent-ion relates chiefly to alarms for automobiles adapted to be sounded by the gaseous fluids escaping from the exhaust pipe of the engine, and it has for its object to provide a simple and eective alarm including a whistle adapted to be sounded by the exhaust gases and to be moved into and out of the path of the escaping gases, the whistle being made operative by a movement into said path and rendered inoperative by a movement out of said path, the exhaust outlet being then unobstructed.

The invention consists in the improvements which I will now proceed to describe and claim.

'Of the accompanying drawings which form a part of this specification,-Figure l represents a longitudinal vertical section showing an alarm embodying my invention applied to an exhaust pipe. Fig. 2 represents a section on line 2 2 of Fig. 1 looking toward the left. Fig. 3 represents a section on line 3 3 of Fig. 1 looking toward the right.

Similar reference characters indicate the same or similar parts in all the ligures.

In the drawings, 12 represents .a pipe or conduit for the discharge of a gaseous fluid or mixture such as that discharged from the gasolene engine of a motor vehicle. 13 represents the outlet terminal or section of said conduit, this being preferably adapted to be detachably secured to the main portion 12. As here shown, the section 13 has aneck portion 13a which is divided or separable at one side and has ears 14 forming the sides of the division, said ears being provided with a binding screw 15 whereby they may be pressed together to slightly contract the neck port-ion 13a and clamp the latter upon the main portion 12, the section 13 being preferably of larger diameter than the neck portion 13a and the main portion 12, and having a circular open mouth.

16 represents a circular battle plate which is hinged to the section 13 and is adapted to be moved into the mouth of the latter, as shown by full lines, and out of said mouth,

Specification of Letters Patent.

Application led February 17, 1911.

Patented Sept. 3, 1912.

Serial No. 609,185.

as shown by dotted lines in Fig. 1. The baffle plate is of smaller diameter than the internal diameter of the section 13 so that when located in the latter the periphery of the baille plate and the internal surface of the section 13 create a narrow annular passage 17 through which the gaseous fluid emerges in a thin annular stream.

The hinge connection between the baie plate 16 and the conduit section 13 is preferably composed of ears 18 formed on one side of the section 13, an ear 19 formed on a plate 2O attached to the baille plate 16, and a hinge pintle 21 which passes through and is rigidly secured to the ear 19 by means of a key 22 or otherwise, said pintle projecting from the opposite sides of the ear 19 and being journaled to rotate freely in the ears 18. The pintle 21 is provided with an enlarged extension 21a to which is attached a lever 23 which may be connected by suitable means such as a flexible cord 24 with a suitable operating lever, not shown, on the body of an automobile.

25 represents a stem which is rigidly attached to the baille plate 16 and is preferably formed on the plate 20, said stem extending substantially at right angles to the plane of the baille plate and being arranged centrally thereof.

26 represents a whistle composed of a resonant metal cup provided with a central or hub portion 27 which is fitted upon the outer end of the stem 25 and may be secured to the stem by any suitable means such as a nut 28 engaged with a screw thread on the stem 25 and bearing against one end of the hub portion 27, the other end of said portion being held by the nut against a shoulder 29 on the stem. It will be noted that the whistle body hub 27 is slidable on the stem 25 and may be confined in different positions against outward movement by the nut 2S. The distance between the whistle mouth 30 and the baffle plate 16 may, therefore, be varied. The exhaust from lan engine of high power requires a relatively wide space between the mouth 30 and the plate 16 so that the exhaust under relatively high pressure will not fill and choke the interior of the whistle. When the pressure of the exhaust is relatively low the mouth 30 should be near the plate 16 in order that the gases may properly sound the whistle. In Fig. 1 the mouth 30 is at its minimum dist-ance from the plate 16. When a greater distance is required the nut 28 is turned outwardly and the pressure of the exhaust will hold the hub 27 against said nut. The body of the whistle surrounds and is of considerably greater diameter than the stem 25, said body being preferably tapered outwardly from the hub portion to the central portion of the body and from thence again tapered inwardly to the inner end or mouth 30 of the cup, said inner end being circular and concentric with the stem 25. The mouth 30 faces the baffle plate and is separated therefrom by an intervening space, as shown by Fig. 1, the internal diameter of the mouth being somewhat greater than the diameter ofl the baffle plate and so arranged that an annular stream of gaseous fluid passing through the annular outlet 17 will impinge upon the mouth 30 and sound the whistle.

The hinge which connects the baille plate with the conduit section 13 is located at the lower side of said section, the arrangement being such that the baffle plate and whistle are normally moved by gravitation to the dotted line position from the full line position, shown by Fig. 1. plate and whistle are in the depressed dotted line position, they are inoperative and are located below the stream of fluid escaping from the conduit section 13. Vhen it is desired to sound an alarm, the baflie plate and whistle are swung upwardly to the full line position, shown by Fig. 1, by force exerted through t-he cord 24 on the lever 23. When the baffle plate and whistle are in the position last described they are in the path of the escaping fluid and the whistle is sounded.

rlhe whistle is preferably of circular form in cross section at all points excepting at its central portion which is preferably truncated to form opposite vertical side walls 31. By thus truncating the body of the whistle, I reduce its diameter crosswise yso that it takes up less'room than would be the case if all portions of the whistle were circular in cross section. Moreover, I have found that by truncating the whistle I have improved the tone emitted thereby. It is obvious, however, that the truncated port-ions 31 may be omitted, t-he larger portion of the body of the whistle being of circular form, as illustrated by full and dotted lines in Fig. 3.

I claim 1. An alarm comprising a conduit for gaseous fluid having a circular mouth, a circular disk adapted to pass within said mouth, an annular space being formed between the edge of the disk and the wall of said mouth when the disk is within the latter, means connected to one edge of the disk i for pivotally supporting the same, an adv When the baille' justable whistle body carried by said disk and having its edge opposite the periphery of the latter, and means for swinging said disk on its pivot.

2. An alarm comprising a conduit for gaseous fluid having a circular mouth, a circular disk adapted to pass within lsaid mouth, an annular space being formed be-' tween the edge of the disk and the wall of said mouth when the disk is within the latter, a pivot ear connected with one edge of said disk, a pivot pin secured to said ear, pivot ears supported by said conduit and in which said pin is loosely mounted, means for rocking said pin, and a whistle body carried by said disk and having its edge opposite the periphery of the latter, and means for adjusting said whistle body relative to said disk.

3. An alarm comprising a conduit for gaseous fuel having a circular mouth, a circular baffle plate adapted to enter said mouth, an annular space being formed between the edge of said disk and the wall of the mouth when the disk is within the latter, said disk being constructed to force fluid passing through said conduit to pass around the edge of the disk, means connected with one edge of the disk for pivotally supporting the same, a stem carried by said disk, a whistle carried by said stem and having its vibrating edge opposite the opening surrounding said disk when the latter is within said mouth, and means for swinging said disk on its pivot.

1. An alarm comprising a conduit for a gaseous fluid, having a circular mouth and fixed ears at one side of said mouth, a circular baille plate formed to enter said mouth and form therewith an annular outlet for said fluid, said plate having an ear located between the ears on the conduit, and a hinge pintle rigidly att-ached to the said ear and journaled in the ears on the conduit, said pintle having an extension, a lever attached to said extension, a stem affixed to the baffle plate, and a whistle composed of a resonant cup having a hub portion attached to the outer end of the stem and a circular mouth which faces and is separated from the baffle plate, and is so formed that an annular stream of fluid issuing from said outlet impinges upon it, the said ears and pintle constituting a hinge which permits the baffle plate and whistle to be moved into and out of the path of the fluid issuing from the conduit.

In testimony whereof I have aiiiXed my signature, in presence of two witnesses.

' ANTHONY SON.

lVitnesses C. F. BROWN, WM. E. INNIS.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

